SoZo Capacitors Home Studio

[OpusOfTrolls]

Why did you build a non-load bearing double wall with two major flanking paths? I assume you might not need the higher STC to track correctly?

[SoZo]

Acording to John Sayers

Staggered Studs. Here you use two studs for each side of the wall. The plasterboard on one side is attached to one stud and the plaster on the other side is attached to the other stud. The two studs are connected to a common base and top plate.

This will be an STC of 48

Staggered stud wall construction with 1 layer of 16mm(5/8") Plasterboard on studs of 95x35mm (4 x 11/2") on a 120mm (4 3/4")common base.

[SoZo]

I could easily double the sheetrock and have 2 5/8ths layers on each side of the wall briging the STC to 54, would this make a huge difference ?

[.:On The Rock:.]

Looks awesome!

What are those two small bits of pipe doing in the last picture? Cable runs?

[SoZo]

Originally Posted by .:On The Rock:.

Looks awesome!

What are those two small bits of pipe doing in the last picture? Cable runs?

im running into my house with a 24 channel , my house is 50 x 30 ten foot ceilings...

[OpusOfTrolls]

Originally Posted by SoZo

I could easily double the sheetrock and have 2 5/8ths layers on each side of the wall briging the STC to 54, would this make a huge difference ?

No, because the sound will pass through the floor and ceiling. The only STC that wall will achieve is in the mid band and high band. The bass might have an STC of 12 with the addition of your wall, if adding green glue and drywall maybe 15. One flanking path will basically cut the STC in half, with large bass. The wall you built is good, but the STC rating you quoted is for the wall only, assuming no other flanking paths.

[SoZo]

Originally Posted by OpusOfTrolls

No, because the sound will pass through the floor and ceiling. The only STC that wall will achieve is in the mid band and high band. The bass might have an STC of 12 with the addition of your wall, if adding green glue and drywall maybe 15. One flanking path will basically cut the STC in half, with large bass. The wall you built is good, but the STC rating you quoted is for the wall only, assuming no other flanking paths.

Floor is Concrete and pergo... I dont think much will go through the floor? What can I do with the Ceiling? It is very open gable above with basic tempature insulation

[SoZo]

Todays Updates

[OpusOfTrolls]

Hi, sorry if I might have been a bit of a downer, but I do think your wall should be okay. If you are worried about low frequency bleed from the control to tracking room, you can always monitor with a EQ set to trim down the lows a bit. But I doubt it's a problem.

Also, for future reference, STC refers to the transmission loss of speech frequencies. Transmission Loss is the general term for the reduction of sound transmission.

The flanking paths in your studio would have costed a fortune to fix anyway. The ceiling is the primary culprit, as also looks the frontwall of your CR. In almost all circumstances, the CR and TR are designed to not be coupled, but in your situation you will just have to make the best of what you have.

[SoZo]

Originally Posted by OpusOfTrolls

Hi, sorry if I might have been a bit of a downer, but I do think your wall should be okay. If you are worried about low frequency bleed from the control to tracking room, you can always monitor with a EQ set to trim down the lows a bit. But I doubt it's a problem.

Also, for future reference, STC refers to the transmission loss of speech frequencies. Transmission Loss is the general term for the reduction of sound transmission.

The flanking paths in your studio would have costed a fortune to fix anyway. The ceiling is the primary culprit, as also looks the frontwall of your CR. In almost all circumstances, the CR and TR are designed to not be coupled, but in your situation you will just have to make the best of what you have.

Thanks for the clarity and time to post. The ceiling is the only flanking culprit as the floor and walls are solid concrete and only one side if the walls stud is actually connected to the concrete walls, the other is floating and will be caulked tight . I will have to try it out and see first.

[Ron Vogel]

The offset stud is good...I built my old room in a very similar manner...BUT...I would add more mass to the walls personally. On at least one side I would put MDF over the studs, then the drywall over that. Sealing the window is critical too. I planned on a double pane dealio...but I got an old glass shower divider for free that was 3/4" thick...it ended up perfect for my needs. I had a few leaks and they showed up right away. A bit of caulk to help my gasket did the trick.

[chris carter]

I think the Pergo floor will be a huge problem. Possibly a bigger problem than the ceiling. Sound from the speakers, your chair rolling around, etc. in the CR will go straight through the floor and travel up every mic stand in the live room. Pergo transmits sound AMAZINGLY well. There is a quick/easy/cheap fix though, and that's just to set a shallow depth on a circular saw and cut a small gap in the floor right up next to the wall to isolate the control room Pergo from the live room Pergo. You can cover the gap with some baseboad and quarter-round for cosmetics so it's not visible. Then the only thing transmitting through the floor will have to go through the concrete and that's got a lot of mass so it won't be that big of a deal unless you are really cranking the sound (in which case your wall and ceiling won't keep up anyway).

I agree that adequately dealing with the floor and ceiling would probably be cost-prohibitive for this build.

[SoZo]

Originally Posted by chris carter

I think the Pergo floor will be a huge problem. Possibly a bigger problem than the ceiling. Sound from the speakers, your chair rolling around, etc. in the CR will go straight through the floor and travel up every mic stand in the live room. Pergo transmits sound AMAZINGLY well. There is a quick/easy/cheap fix though, and that's just to set a shallow depth on a circular saw and cut a small gap in the floor right up next to the wall to isolate the control room Pergo from the live room Pergo. You can cover the gap with some baseboad and quarter-round for cosmetics so it's not visible. Then the only thing transmitting through the floor will have to go through the concrete and that's got a lot of mass so it won't be that big of a deal unless you are really cranking the sound (in which case your wall and ceiling won't keep up anyway).

I agree that adequately dealing with the floor and ceiling would probably be cost-prohibitive for this build.

Thats a great idea. I can easily cut the pergo...

[2N1305]

A few questions from someone who is currently building a similar installation:
1- How do you ensure that the Roxul (rock wool) insulation will not fall "back into the wall" ? Does it just stay there on its own supported by the friction of it against the studs?

2- Does rock wool seem to give anyone a hard time breathing-wise, and skin-wise, does it irritate you?

3- What would be recommended to insulate (acoustically, obviously) a ceiling which is just made of 12 inch I-beams? My first plan is to put rock wool between each and put drywall (gyproc) over that. But hen I thought about this: Sound is conducted by any surface that vibrates, therefore the gyproc on the celing will vibrate and transfer these vibrations to the I-beam, which in turn transfer them tto the floor of my living rooom, etc..

What is the best way (least amount of material is my main factor) to insulate a ceiling? (keep in mind I have only four inches to spare, vertically from the surface of each I-beam)

Thank you all!

[Syncamorea]

Originally Posted by 2N1305

Does rock wool seem to give anyone a hard time breathing-wise, and skin-wise, does it irritate you?

I worked with rock wool on exactly one occasion without adequate protection.

[muziekschuur]

I've worked with Rockwool countless times without protection... No problems. But some people are very sensitive to the little fibers wich can stick in the skin..

[leadvox]

Originally Posted by muziekschuur

I've worked with Rockwool countless times without protection... No problems. But some people are very sensitive to the little fibers wich can stick in the skin..

Same here. Rockwool is tons less itchy to work with than fluffy, unless you're working with it overhead. Then its more crumbly nature seems to make it as bad as or worse than fluffy.